#ifndef UTIL_SUBSYSTEM_HXX
#define UTIL_SUBSYSTEM_HXX 

#include <util/util.h>
#include <iostream>
#include <string>
using namespace std;

#ifndef _WIN32
# include <cstring>
#endif

namespace Util
{
   class UTIL_API Subsystem 
   {
   public:
      static const Subsystem NONE; // default subsystem

      const char* getSubsystem() const { return mSubsystem; }
      size_t getSubSystemLength() const { return mSubsystemLength; }

   public:
      Subsystem(const char* rhs) : mSubsystem(rhs), mSubsystemLength(strlen(rhs)) {}

      operator const char*() const { return mSubsystem; }

   protected:
      Subsystem& operator=(const string& rhs);

      const char* mSubsystem;
      size_t mSubsystemLength;

   private:

      friend UTIL_API ostream& operator<<(ostream& strm, const Subsystem& ss);
   };


   UTIL_API ostream& operator<<(ostream& strm, const Subsystem& ss);

   // in order to have subsystems in your application, subclass from this class
   /*

   namespace MyNamespace
   {

   class Subsystem : public resip::Subsystem
   {
   public:
   // Add new systems below
   static const Subsystem SPECIAL_SUBSYSTEM;

   private:
   Subsystem(const char* rhs) : resip::Subsystem(rhs) {};
   Subsystem(const resip::Data& rhs);
   Subsystem& operator=(const resip::Data& rhs);
   };

   }
   */

}

#endif // #ifndef UTIL_SUBSYSTEM_HXX

/* ====================================================================
* The Vovida Software License, Version 1.0 
* 
* Copyright (c) 2000 Vovida Networks, Inc.  All rights reserved.
* 
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in
*    the documentation and/or other materials provided with the
*    distribution.
* 
* 3. The names "VOCAL", "Vovida Open Communication Application Library",
*    and "Vovida Open Communication Application Library (VOCAL)" must
*    not be used to endorse or promote products derived from this
*    software without prior written permission. For written
*    permission, please contact vocal@vovida.org.
*
* 4. Products derived from this software may not be called "VOCAL", nor
*    may "VOCAL" appear in their name, without prior written
*    permission of Vovida Networks, Inc.
* 
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND
* NON-INFRINGEMENT ARE DISCLAIMED.  IN NO EVENT SHALL VOVIDA
* NETWORKS, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT DAMAGES
* IN EXCESS OF $1,000, NOR FOR ANY INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
* 
* ====================================================================
* 
* This software consists of voluntary contributions made by Vovida
* Networks, Inc. and many individuals on behalf of Vovida Networks,
* Inc.  For more information on Vovida Networks, Inc., please see
* <http://www.vovida.org/>.
*
*/
